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/******************************************************************************
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the NVIDIA CORPORATION nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************/
#pragma once
#include <thrust/detail/config.h>
#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_NVCC
#include <thrust/system/cuda/detail/transform.h>
#include <thrust/iterator/permutation_iterator.h>
THRUST_NAMESPACE_BEGIN
namespace cuda_cub {
template <class Derived,
class MapIt,
class ItemsIt,
class ResultIt>
ResultIt __host__ __device__
gather(execution_policy<Derived>& policy,
MapIt map_first,
MapIt map_last,
ItemsIt items,
ResultIt result)
{
return cuda_cub::transform(policy,
thrust::make_permutation_iterator(items, map_first),
thrust::make_permutation_iterator(items, map_last),
result,
identity());
}
template <class Derived,
class MapIt,
class StencilIt,
class ItemsIt,
class ResultIt,
class Predicate>
ResultIt __host__ __device__
gather_if(execution_policy<Derived>& policy,
MapIt map_first,
MapIt map_last,
StencilIt stencil,
ItemsIt items,
ResultIt result,
Predicate predicate)
{
return cuda_cub::transform_if(policy,
thrust::make_permutation_iterator(items, map_first),
thrust::make_permutation_iterator(items, map_last),
stencil,
result,
identity(),
predicate);
}
template <class Derived,
class MapIt,
class StencilIt,
class ItemsIt,
class ResultIt>
ResultIt __host__ __device__
gather_if(execution_policy<Derived>& policy,
MapIt map_first,
MapIt map_last,
StencilIt stencil,
ItemsIt items,
ResultIt result)
{
return cuda_cub::gather_if(policy,
map_first,
map_last,
stencil,
items,
result,
identity());
}
} // namespace cuda_cub
THRUST_NAMESPACE_END
#endif
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